Multiple slot selector working

package.json

@@ -16,7 +16,8 @@
       { "command": "modelsim.toggleWaveMode", "title": "Toggle Wave Debug Mode" }
     ],
     "keybindings": [
-      { "command": "modelsim.addWaveUnderCursor", "key": "ctrl+w" },
+      { "command": "modelsim.addWaveUnderCursor", "key": "ctrl+w", "args": { "mode": "auto" } },
+      { "command": "modelsim.addWaveUnderCursor", "key": "ctrl+e", "args": { "mode": "set" } },
       { "command": "modelsim.toggleWaveMode", "key": "ctrl+alt+m" },
       { "command": "modelsim.zoomInWave", "key": "ctrl+alt+u" }
     ],

src/extension.ts

@@ -7,7 +7,7 @@ const lastHoverByDoc = new Map<string, { pos: vscode.Position; at: number }>();
 const HOVER_FRESH_MS = 2000;
 
 // Hold MANY instance paths per module name, e.g. queue_slot -> ["/test/...[0]", "/test/...[1]", ...]
-let moduleTree: Record<string, string[]> = {};
+let moduleTree: Record<string, { module: string[], last: number }> = {};
 
 let waveMode = false;
 let statusItem: vscode.StatusBarItem;
@@ -170,7 +170,7 @@ export function activate(context: vscode.ExtensionContext) {
   const cmd_2 = vscode.commands.registerCommand('modelsim.toggleWaveMode', async () => {
     toggleWaveMode();
   });
-  const cmd = vscode.commands.registerCommand('modelsim.addWaveUnderCursor', async () => {
+  const cmd = vscode.commands.registerCommand('modelsim.addWaveUnderCursor', async (args?: { mode?: string }) => {
   if (waveMode) {
 
       const editor = vscode.window.activeTextEditor;
@@ -219,7 +219,7 @@ export function activate(context: vscode.ExtensionContext) {
       const modName = path.basename(editor.document.fileName, path.extname(editor.document.fileName));
 
       let instancePaths =
-        moduleTree[modName] ?? moduleTree[modName.toLowerCase()];
+        moduleTree[modName].module ?? moduleTree[modName.toLowerCase()].module;
       if (!instancePaths || instancePaths.length === 0) {
         console.log(
           `No instance paths found for module "${modName}". ` +
@@ -228,15 +228,49 @@ export function activate(context: vscode.ExtensionContext) {
         return;
       }
 
+
+
       // Add the token for every instance of this module (dedupe paths just in case)
       instancePaths = Array.from(new Set(instancePaths)).map(p => p.replace(/\/+/g, '/'));
 
-      let ok = true;
+      const mode = args?.mode ?? 'auto';
-      for (const p of instancePaths) {
+
-        const cmd = `quietly add wave -noupdate ${p}/${tokenText}`.replace(/\/+/g, '/');
+      let instance_num = moduleTree[modName].last ?? moduleTree[modName.toLowerCase()].last;
-        const res = await sendAndAwait(sharedDir, cmd, timeoutMs);
+      if (instancePaths.length > 1 && mode === 'set') {
-        ok = ok && !!res;
+          const input_num = await vscode.window.showInputBox({
+          title: 'Enter a number',
+          prompt: 'This number will be used by the action.',
+          placeHolder: moduleTree[modName].last !== undefined ? `Press Enter to reuse ${moduleTree[modName].last}` : 'e.g. 42',
+          value: moduleTree[modName].last !== undefined ? String(moduleTree[modName].last) : '',
+          ignoreFocusOut: true,
+          validateInput: (value) => {
+            if (value.trim() === '') return null; // allow Enter to reuse last
+            const n = Number(value);
+            if (!Number.isInteger(n)) return 'Please enter an integer.';
+            if (n < 0) return 'Please enter a non-negative integer.';
+            // optionally cap it
+            if (n > 10000) return 'That’s too large (max 10000).';
+            return null;
+          },
+        });
+
+        if (input_num === undefined) {
+          // User hit Esc — do nothing
+          return;
+        }
+    
+        // Empty input means reuse last (if any)
+        instance_num = (input_num.trim() === '' || Number(input_num) >= moduleTree[modName].module.length) && moduleTree[modName].last !== undefined ? moduleTree[modName].last : Number(input_num);
+
+        moduleTree[modName].last = instance_num;
       }
+
+      let ok = true;
+      // for (const p of instancePaths) {
+      const cmd = `quietly add wave -noupdate \{${instancePaths[instance_num]}/${tokenText}\}`.replace(/\/+/g, '/');
+      console.log(cmd);
+      const res = await sendAndAwait(sharedDir, cmd, timeoutMs);
+      ok = ok && !!res;
       ok = ok && !!(await sendAndAwait(sharedDir, 'update', timeoutMs));
 
       if (ok) {
@@ -355,7 +389,7 @@ async function requestModuleTree(
   sharedDir: string,
   topScope: string,
   timeoutMs: number
-): Promise<Record<string, string[]>> {
+): Promise<Record<string, { module: string[], last: number }>> {
   const tree: Record<string, string[]> = {};
   const payload = `get_module_tree ${topScope}`;
   console.log("Requesting ModuleTree");
@@ -365,7 +399,7 @@ async function requestModuleTree(
   const text = (await res) ?? "";
   console.log("Module Hierarchy: ", text)
   const rx = /\{([^}]+?)\s+\(([^)]+)\)\}/g; // {<path> (<type>)}
-  const moduleTree: Record<string, string[]> = {};
+  const moduleTree: Record<string, { module: string[], last: number }> = {};
 
   let m: RegExpExecArray | null;
   while ((m = rx.exec(text))) {
@@ -386,7 +420,7 @@ async function requestModuleTree(
     //     .map(seg => (seg.startsWith("u_") ? seg : "u_" + seg))
     //     .join("/");
 
-    (moduleTree[modType] ??= []).push(rawPath);
+    ((moduleTree[modType] ??= { module: [], last: 0 }).module).push(rawPath);
   }
 
   console.log(moduleTree);